191214740 has 24 divisors (see below), whose sum is σ = 407054760. Its totient is φ = 75437568.

The previous prime is 191214733. The next prime is 191214757. The reversal of 191214740 is 47412191.

191214740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 69288976 + 121925764 = 8324^2 + 11042^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64025 + ... + 66944.

It is an arithmetic number, because the mean of its divisors is an integer number (16960615).

Almost surely, 2^191214740 is an apocalyptic number.

191214740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191214740 is an abundant number, since it is smaller than the sum of its proper divisors (215840020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191214740 is a wasteful number, since it uses less digits than its factorization.

191214740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131051 (or 131049 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 191214740 is about 13828.0417991847. The cubic root of 191214740 is about 576.1122667293.

The spelling of 191214740 in words is "one hundred ninety-one million, two hundred fourteen thousand, seven hundred forty".